A surgical instrument for treating digestive tract fistulas

Abstract

The present invention relates to a surgical instrument for treating digestive tract fistula, comprising a main end control handle, a slave end clamping and pulling mechanism, a suturing mechanism and a connecting part; the main end control handle is located at one end of the connecting part, and the slave end clamping and pulling mechanism and the suturing mechanism are located at the other end of the connecting part; the slave end clamping and pulling mechanism is used to clamp the tissue around the fistula so that it is partially or completely merged in the cavity; the suturing mechanism is used to perform penetrating suturing on the tissue pulled together by the clamping and pulling mechanism, and the main end control handle is provided with an operating part, and the operating part is connected to the slave end clamping and pulling mechanism and the suturing mechanism through wire drawing to operate the slave end clamping and pulling mechanism and the suturing mechanism to perform clamping and pulling and penetrating suturing actions. The surgical instrument can perform clamping and suturing operations well, thereby completing the suturing operation of the digestive tract fistula in the cavity, with a small surgical incision, which can greatly reduce the risk of patients in the fistula suturing operation.

Description

Technical Field

[0001] The invention relates to the technical field of surgical instruments, and in particular to a surgical instrument for treating digestive tract fistula. Background Art

[0002] Although modern medicine has made great progress in surgical techniques and preoperative preparation, gastrointestinal fistulas still occur from time to time.

[0003] Fistula not only increases mortality, but also has adverse effects on long-term survival. Therefore, the treatment of fistula is still a difficult problem in modern medicine. Traditional surgical treatment not only brings a heavy economic burden to patients and their families, but also has high surgical risks.

[0004] Patients with gastrointestinal fistulas can recover spontaneously (40% to 60%) after infection control and nutritional support, provided there are no obstructions, specific lesions, or other factors that affect healing. However, there is a long waiting period from initial drainage to definitive surgery, generally three months, during which patients may develop complications such as homeostasis imbalance, bleeding, infection, multiple organ dysfunction, and malnutrition.

[0005] Therefore, how to promote the rapid healing of gastrointestinal fistula and shorten the course of the disease is the trend of gastrointestinal fistula research. Summary of the invention

[0006] The purpose of the present invention is to provide a surgical instrument for treating digestive tract fistula, which overcomes the above-mentioned defects by optimizing the design of digestive tract fistula equipment.

[0007] To achieve the above-mentioned purpose, the surgical instrument for treating gastrointestinal fistula provided by the present invention comprises a main end control handle, a slave end clamping and pulling mechanism, a suturing mechanism and a connecting part; the main end control handle is located at one end of the connecting part, and the slave end clamping and pulling mechanism and the suturing mechanism are located at the other end of the connecting part; the slave end clamping and pulling mechanism is used to clamp the tissue around the fistula so that part or all of it is merged in the cavity; the suturing mechanism is used to perform penetrating suturing on the tissue drawn by the slave end clamping and pulling mechanism, and the main end control handle is provided with an operating part, which is transmission-connected to the slave end clamping and pulling mechanism and the suturing mechanism through wire drawing, so as to operate the slave end clamping and pulling mechanism and the suturing mechanism to perform clamping and pulling and penetrating suturing actions.

[0008] Optionally, the end clamping and pulling mechanism includes a first clamp, a second clamp, and a third clamp; the first clamp is located on the outside of the first clamping edge of the third clamp, the second clamp is located on the outside of the second clamping edge of the third clamp, the first clamp is used to clamp the tissue on one side of the fistula, the second clamp is used to clamp the tissue on the other side of the fistula, and the third clamp is used to merge part or all of the tissue on both sides of the fistula in the cavity.

[0009] Optionally, the first clamp and the third clamp share the first clamping edge, and the second clamp and the third clamp share the second clamping edge.

[0010] Optionally, the suturing mechanism includes a rotating frame, a stapler and a fourth clamp, the stapler is fixed to the rotating frame, the rotating frame can rotate relative to the end clamping and pulling mechanism, the stapler is provided with a channel for passing the suture thread, and the head end of the channel is equipped with a cutter for cutting the suture thread; the fourth clamp encloses the third clamp, the third clamp is located inside the fourth clamp, and the fourth clamp is used to bend the cut suture thread and bring it closer to the tissue to fix the penetrated tissue together.

[0011] Optionally, the first clamp, the second clamp, and the third clamp are respectively provided with a plurality of teeth, and corresponding tooth grooves are formed between the teeth; when the rotating frame rotates, the suture device can correspond to each of the tooth grooves one by one; the fourth clamp is provided with an extrusion portion corresponding to each of the tooth grooves on the inner side of its clamping part, so that the cut suture wire can be bent into a "C" shape through the extrusion portion.

[0012] Optionally, the pressing portion of the fourth clamp is a plate-like structure capable of passing through the tooth groove, and a lateral projection thereof is a triangle with apex angles facing each other.

[0013] Optionally, the front end of the connecting portion is provided with an arcuate groove corresponding to the rotation range of the suture device, so as to form a space for the suture thread to swing back and forth with the suture device.

[0014] Optionally, the main end control handle includes a hollow track and a holder arranged at the end of the track, and the track is provided with a first pull rod, a second pull rod, a third pull rod, and a fourth pull rod distributed at intervals; the first pull rod is transmission connected to the first clip through a first wire, the second pull rod is transmission connected to the second clip through a second wire, the third pull rod is transmission connected to the third clip through a third wire, and the fourth pull rod is transmission connected to the fourth clip through a fourth wire, and the first pull rod, the second pull rod, the third pull rod, and the fourth pull rod can drive the first clip, the second clip, the third clip, and the fourth clip to open and close by moving on the track.

[0015] Optionally, a fifth pull rod is provided on the track, and the fifth pull rod is transmission connected to the cutter through a fifth wire; a rotating frame control handle is provided at the end of the track, and the rotating frame control handle is transmission connected to the rotating frame through a sixth wire.

[0016] Optionally, a locking mechanism is provided between the first pull rod, the second pull rod, the third pull rod, the fourth pull rod, the fifth pull rod and the track.

[0017] Optionally, the locking mechanism includes a tooth on the side wall of the track. A clamping plate supported by a spring is arranged inside the first pull rod, the second pull rod, the third pull rod, the fourth pull rod, and the fifth pull rod. The clamping plate includes a clamping portion and an operating portion. The clamping portion can be clamped with the tooth under the support of the spring, and the operating portion is used to apply an external force to make the clamping portion disengage from the tooth against the acting force of the spring, so as to release the lock.

[0018] Optionally, the track and the connecting portion are provided with a support channel for passing through the suture. A suture push rod is arranged at the end of the track, and the suture push rod is used to drive the suture to advance and retreat in the support channel by pushing and pulling.

[0019] Optionally, the rotating frame control handle is nested in the suture push rod.

[0020] The surgical instrument for treating digestive tract fistula provided by the present invention is applicable to the treatment of digestive tract fistula under endoscope, and can well control the clamping and suturing operations of the device implanted into the human body cavity, so as to complete the suture operation of digestive tract fistula in the cavity. There is no strict limit on the size of the fistula opening, the surgical wound is small, the treatment means is flexible, and the risk of the patient in the fistula suture operation can be greatly reduced. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of a surgical instrument for treating digestive tract fistula provided by an embodiment of the present invention;

[0022] Figure 2 is Figure 1 the axonometric view of the surgical instrument for treating digestive tract fistula shown;

[0023] Figure 3 is a schematic diagram of the structure of the end clamping and pulling mechanism, the suture mechanism, and the connecting portion (partial);

[0024] Figure 4 is Figure 3 the axonometric view of the end clamping and pulling mechanism, the suture mechanism, and the connecting portion (partial) shown;

[0025] Figure 5 is a schematic diagram of the structure of the main end control handle;

[0026] Figure 6 is Figure 5 the axonometric view of the main end control handle shown;

[0027] Figure 7 is Figure 5 the A-A view of;

[0028] Figure 8Schematic diagram of simulating suture of digestive tract fistula by the slave end clamping and pulling mechanism and the suture mechanism inside the human body cavity;

[0029] Figure 9 is Figure 8 B-B view of.

[0030] In the figure:

[0031] 10 - Master end control handle; 11 - First pull rod; 12 - Second pull rod; 13 - Third pull rod; 14 - Fourth pull rod; 15 - Fifth pull rod; 16 - Rotating frame control handle; 17 - Suture wire push rod; 18 - Track; 181 - Clamping teeth; 19 - Gripper; 20 - Slave end clamping and pulling mechanism; 21 - First clip; 22 - Second clip; 23 - Third clip; 24 - Cantilever; 30 - Suture mechanism; 31 - Rotating frame; 32 - Suturing device; 321 - Channel; 322 - Cutter; 34 - Fourth clip; 341 - Extrusion part; 40 - Connecting part; 41 - Arc groove; 50 - Suture wire; 61 - First wire drawing; 62 - Second wire drawing; 63 - Third wire drawing; 64 - Fourth wire drawing; 65 - Fifth wire drawing; 66 - Sixth wire drawing; 70 - Spring; 80 - Clamping plate; 81 - Clamping part; 82 - Operating part; 90 - Fistula opening; 100 - Body cavity. Detailed implementation manners

[0032] To enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0033] In this article, terms such as "upper, lower, inner, outer" are established based on the positional relationship shown in the drawings. Depending on the different drawings, the corresponding positional relationship may also change accordingly. Therefore, it cannot be understood as an absolute limitation of the protection scope; moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 which is the overall structural schematic diagram of a surgical instrument for treating digestive tract fistula provided by an embodiment of the present invention; Figure 2 is Figure 1 the axonometric view of the surgical instrument for treating digestive tract fistula shown.

[0035] As shown in the figure, in a specific embodiment, the surgical instrument for treating digestive tract fistula provided by the present invention mainly consists of a master end control handle 10, a slave end clamping and pulling mechanism 20, a suture mechanism 30, a connecting part 40 and other parts.

[0036] The connecting portion 40 is generally cylindrical in shape with a certain length, and is provided with a channel inside thereof for the following drawing components to pass through. The main end control handle 10 is located at the rear end of the connecting portion 40, and the slave end clamping and pulling mechanism 20 and the suturing mechanism 30 are located at the front end of the connecting portion 40; the slave end clamping and pulling mechanism 20 is used to clamp the tissue around the fistula so that part or all of it is merged in the cavity, and the suturing mechanism 30 is used to penetrate and suture the tissue pulled together by the slave end clamping and pulling mechanism 20. The main end control handle 10 is provided with an operating portion, and the operating portion is transmission-connected to the slave end clamping and pulling mechanism 20 and the suturing mechanism 30 through the drawing.

[0037] In this way, the doctor can make the end clamping and pulling mechanism 20 perform a clamping and pulling action through the operating part, and can make the suturing mechanism 30 perform a penetrating suturing action, thereby completing the suturing of the fistula.

[0038] Please refer to Figure 3 , Figure 4 , Figure 3 It is a structural schematic diagram of the end clamping and pulling mechanism, the suturing mechanism and the connecting part (partial); Figure 4 for Figure 3 An axonometric view of the end clamping and pulling mechanism, the suturing mechanism and the connecting part (partial) is shown.

[0039] As shown in the figure, the end clamping and pulling mechanism 20 is provided with a cantilever arm 24 extending forward from the connecting part, and the cantilever arm 24 is close to the edge position of the front end of the connecting part 40. There are three clamps at the front end of the cantilever arm 24, namely the first clamp 21, the second clamp 22 and the third clamp 23; the first clamp 21 is located on the outside of the first clamping edge of the third clamp 23, and it is attached to the third clamp 23 and shares the first clamping edge with the third clamp 23; the second clamp 22 is located on the outside of the second clamping edge of the third clamp 23, and it is attached to the third clamp 23 and shares the second clamping edge with the third clamp 23.

[0040] When in use, the first clamp 21 is used to clamp the tissue on one side of the fistula, the second clamp 22 is used to clamp the tissue on the other side of the fistula, and the third clamp 23 is used to drive the first clamp 21 and the second clamp 22 to move closer to the middle, so that part or all of the tissue on both sides of the fistula clamped by the first clamp 21 and the second clamp 22 can be merged in the cavity, preparing for the next step of suturing.

[0041] The suturing mechanism 30 mainly consists of a rotating frame 31, a suturing device 32, a fourth clip 34, etc. The rotating frame 31 extends from the root of the cantilever 24 in the radial direction to the opposite edge. The suturing device 32 is fixed to the rotating frame 31. The rotating frame 31 is rotatably mounted at the front end of the connecting part 40 and can rotate relative to the end clamping and pulling mechanism 20. A channel 321 for passing the suture 50 is provided inside the suturing device 32, and a cutter 322 for cutting the suture 50 is installed at the head end of the channel 321. The fourth clip 34 encloses the third clip 23, and the third clip 23 is located inside the fourth clip 34. The suture 50 can be made of medical metal material, having a certain strength and flexibility. The fourth clip 34 is used to bend the cut suture 50 and move it closer to the tissue to fix the penetrated tissue together.

[0042] Specifically, the clamping edges of the first clip 21, the second clip 22, and the third clip 23 are all serrated, respectively provided with a plurality of tooth parts, and corresponding tooth grooves are formed between the tooth parts. When the rotating frame 31 rotates, the suturing device 32 can correspond to each tooth groove one by one, so that the suture 50 can penetrate the clamped and pulled tissue along the tooth groove. The fourth clip 34 is provided with an extrusion part 341 corresponding to each tooth groove on the inner side of its clamping part. In this embodiment, the extrusion part 341 of the fourth clip 34 is in a plate-like structure capable of passing through the tooth groove, and its lateral projection is a triangle with opposite apex angles. When the fourth clip 34 gradually closes, it can bend the cut suture 50 into a "C" shape from both ends through the extrusion part 341, so as to fix the penetrated tissue together.

[0043] Considering that when the rotating frame 31 rotates, the suture 50 in the suturing device 32 will swing along with it. In order to prevent the rotating frame 31 from shearing the suture 50, an arc-shaped groove 41 is provided at the front end of the connecting part 40. The center of the arc-shaped groove 41 coincides with the center of the rotating frame 31, and its arc length is adapted to the rotation range of the suturing device 32, thereby forming a space for the suture 50 to swing back and forth, so that the suture 50 will not be broken due to rotation.

[0044] Please refer to Figure 5 、 Figure 6 、 Figure 7 , Figure 5 which is a schematic structural diagram of the master end control handle; Figure 6 is Figure 5 the axonometric view of the master end control handle shown in Figure 7 is Figure 5 the A-A view of

[0045] As shown in the figure, the master end control handle 10 is mainly for doctors to operate. It has a hollow track 18 and a gripper 19 provided at the tail of the track. The track 18 is provided with the first pull rod 11, the second pull rod 12, the third pull rod 13, the fourth pull rod 14, and the fifth pull rod 15 which are distributed at intervals.

[0046] The first pull rod 11 is drivingly connected to the first clip 21 through the first wire 61. By pulling the first wire 61 with the first pull rod 11, the first clip 21 can be closed, and by releasing the first pull rod 11, the first clip 21 can be opened. Similarly, the second pull rod 12 is drivingly connected to the second clip 22 through the second wire 62. By pulling the second wire 62 with the second pull rod 12, the second clip 22 can be closed, and by releasing the second pull rod 12, the second clip 22 can be opened. The third pull rod 13 is drivingly connected to the third clip 23 through the third wire 63. By pulling the third wire 63 with the third pull rod 13, the third clip 23 can be closed, and by releasing the third pull rod 13, the third clip 23 can be opened. The fourth pull rod 14 is drivingly connected to the fourth clip 34 through the fourth wire 64. By pulling the fourth wire 64 with the fourth pull rod 14, the fourth clip 34 can be closed, and by releasing the fourth pull rod 14, the fourth clip 34 can be opened.

[0047] That is to say, the first pull rod 11, the second pull rod 12, the third pull rod 13, and the fourth pull rod 14 drive the opening and closing of the first clip 21, the second clip 22, the third clip 23, and the fourth clip 34 respectively by moving on the track 18.

[0048] The fifth pull rod 15 is drivingly connected to the cutter 322 through the fifth wire 65. The fifth pull rod 15 drives the cutter 322 to cut off the suture wire 50 that penetrates the tissue by moving on the track 18.

[0049] A rotary frame control handle 16 is provided at the end of the track 18. The rotary frame control handle 16 is drivingly connected to the rotary frame 31 through the sixth wire 66. By the rotary frame control handle 16, the rotary frame 31 can be driven to rotate, so that the position of the stapler 32 changes, and after the stapler 32 completes one suture, it moves to the next position of the fistula to continue suture.

[0050] In order to ensure that each clip can maintain the closed state after closing without manual holding, locking mechanisms are respectively provided between the first pull rod 11, the second pull rod 12, the third pull rod 13, the fourth pull rod 14, the fifth pull rod 15 and the track 18.

[0051] In this embodiment, the locking mechanism includes a tooth 181 provided on the side wall of the track 18. The tooth 181 is in the shape of an inverted tooth. Inside the first pull rod 11, the second pull rod 12, the third pull rod 13, the fourth pull rod 14, and the fifth pull rod 15, there is a clamping plate 80 supported by a spring 70. The clamping plate 80 is generally in the shape of an "L", and has a clamping portion 81 and an operating portion 82. The clamping portion 81 can be clamped with the tooth 181 under the support of the spring 70, and the operating portion 82 is used to apply an external force to make the clamping portion 81 disengage from the tooth 181 against the acting force of the spring 70, so as to release the locking.

[0052] During use, when pressing down each pull rod towards the hand, the clamping plate 80 thereon will be stuck with the locking teeth 181, preventing the pull rod from moving in the other direction, thus achieving the locking purpose. When unlocking is needed, simply pull the clamping plate 80 outwards with a finger to disengage the clamping plate 80 from the locking teeth 181. Under the action of the springs of the head-end instruments such as the first clip 21, the second clip 22, the third clip 23, and the fourth clip 34, the pull rod moves in the opposite direction and returns to its original state.

[0053] The suture wire 50 runs through the entire set of instruments along the axial direction. The track 18 and the connecting part 40 are provided with support channels for the suture wire 50 to pass through. The support channels have a certain rigidity. The end of the track 18 is provided with a suture wire push rod 17. The rotary frame control handle 16 is nested in the suture wire push rod 17. When pushing the suture wire push rod 17, the suture wire 50 will extend outwards from the front end of the stapler 32, thus penetrating the tissue that has been clamped and pulled together.

[0054] Please refer to Figure 8 、 Figure 9 , Figure 8 Fig. is a simulation diagram of suturing a digestive tract fistula by the end clamping and pulling mechanism and the suturing mechanism inside the human body cavity; Figure 9 For Figure 8 B-B view of

[0055] After the surgical instrument is sent to the vicinity of the fistula opening 90 along the cavity 100, the tissue at the fistula opening is first brushed by the cytobrush to remove the dead tissue. The first clip 21 and the second clip 22 are placed across the fistula opening 90, and then the first pull rod 11 is controlled to make the first clip 21 clamp the tissue on one side of the fistula opening 90. Similarly, the second clip 21 also performs the same operation. After completion, the third clip 23 is closed.

[0056] In this way, the tissue on both sides of the fistula opening 90 is partially or completely clamped together. Then, the position of the stapler 32 is adjusted, and the suture wire 50 is driven forward by the suture wire push rod 17, so that the suture wire 50 passes through the clamped tissue along a tooth groove of the first clip 21, the second clip 22, and the third clip 23. Then, the fifth pull rod 15 is pulled to cut the suture wire 50 with the cutter 322. The fourth pull rod 14 is pulled to bend the suture wire 50 remaining in the tissue with the fourth clip 34. Then, the rotary frame control handle 16 is pulled to continue the same operation in the next tooth groove until the fistula opening 90 is completely sutured.

[0057] The above embodiments are only the preferred solutions of the present invention, and are not specifically limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation manners. For example, the first clip 11, the second clip 12, the third clip 13, and the fourth clip 14 can be designed into other suitable shapes, and so on. Since there are many possible implementation manners, they will not be enumerated one by one here.

[0058] This surgical instrument is applicable to the treatment of internal digestive tract fistulas. After being implanted into the human body cavity, doctors can conveniently control it to perform clamping and suturing operations, so as to complete the suture operation on the digestive tract fistula in the cavity. It is suitable for suturing fistulas of various sizes, large, medium, and small, and has a small surgical wound, which can greatly reduce the surgical risk.

[0059] The surgical instrument for treating digestive tract fistulas provided by the present invention has been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A surgical instrument for treating digestive tract fistula, characterized in that: The invention comprises a main end control handle, a slave end clamping and pulling mechanism, a suturing mechanism and a connecting part; the main end control handle is located at one end of the connecting part, and the slave end clamping and pulling mechanism and the suturing mechanism are located at the other end of the connecting part; the slave end clamping and pulling mechanism is used to clamp the tissue around the fistula so that part or all of it is merged in the cavity; the suturing mechanism is used to perform penetrating suturing on the tissue pulled together by the slave end clamping and pulling mechanism, and the main end control handle is provided with an operating part, which is transmission-connected with the slave end clamping and pulling mechanism and the suturing mechanism through wire drawing to operate the slave end clamping and pulling mechanism and the suturing mechanism to perform clamping, pulling and penetrating suturing actions; the slave end clamping and pulling mechanism comprises a first clamp, a second clamp and a third clamp; the first clamp is located at the first position of the third clamp The outside of the clamping edge, the second clamp is located on the outside of the second clamping edge of the third clamp, the first clamp is used to clamp the tissue on one side of the fistula, the second clamp is used to clamp the tissue on the other side of the fistula, and the third clamp is used to merge part or all of the tissue on both sides of the fistula in the cavity; the suturing mechanism includes a rotating frame, a suturing device and a fourth clamp, the suturing device is fixed to the rotating frame, the rotating frame can rotate relative to the clamping and pulling mechanism from the end, the suturing device is provided with a channel for passing the suture thread, and the head end of the channel is equipped with a cutter for cutting the suture thread; the fourth clamp encloses the third clamp, the third clamp is located inside the fourth clamp, and the fourth clamp is used to bend the cut suture thread and bring it closer to the tissue to fix the penetrated tissue together.

2. The surgical instrument for treating digestive tract fistula according to claim 1, characterized in that: The first clamp and the third clamp share the first clamp edge, and the second clamp and the third clamp share the second clamp edge.

3. The surgical instrument for treating digestive tract fistula according to claim 1, characterized in that: The first clamp, the second clamp and the third clamp are respectively provided with a plurality of teeth, and corresponding tooth grooves are formed between the teeth; when the rotating frame rotates, the suture device can correspond to each tooth groove one by one; the fourth clamp is provided with an extrusion part corresponding to each tooth groove on the inner side of its clamping part, so that the cut suture wire can be bent into a "C" shape through the extrusion part.

4. The surgical instrument for treating digestive tract fistula according to claim 3, characterized in that: The pressing portion of the fourth clip is a plate-like structure capable of passing through the tooth groove, and its lateral projection is a triangle with its apex angles facing each other.

5. The surgical instrument for treating digestive tract fistula according to claim 4, characterized in that: The front end of the connecting part is provided with an arc groove corresponding to the rotation range of the suture tool to form a space for the suture thread to swing back and forth with the suture tool.

6. The surgical instrument for treating digestive tract fistula according to claim 1, characterized in that: The main end control handle includes a hollow track and a holder arranged at the tail of the track, and the track is provided with a first pull rod, a second pull rod, a third pull rod, and a fourth pull rod which are spaced apart; the first pull rod is transmission connected to the first clip through a first wire, the second pull rod is transmission connected to the second clip through a second wire, the third pull rod is transmission connected to the third clip through a third wire, and the fourth pull rod is transmission connected to the fourth clip through a fourth wire, and the first pull rod, the second pull rod, the third pull rod, and the fourth pull rod can drive the first clip, the second clip, the third clip, and the fourth clip to open and close by moving on the track.

7. The surgical instrument for treating digestive tract fistula according to claim 6, characterized in that: A fifth pull rod is provided on the track, and the fifth pull rod is transmission-connected to the cutter through a fifth wire. A rotating frame control handle is provided at the end of the track, and the rotating frame control handle is transmission-connected to the rotating frame through a sixth wire.

8. The surgical instrument for treating digestive tract fistula according to claim 7, characterized in that: A locking mechanism is provided between the first pull rod, the second pull rod, the third pull rod, the fourth pull rod, the fifth pull rod and the track.

9. The surgical instrument for treating digestive tract fistula according to claim 8, characterized in that: The locking mechanism includes a latching tooth arranged on the side wall of the track, and a latching plate supported by a spring is arranged inside the first pull rod, the second pull rod, the third pull rod, the fourth pull rod, and the fifth pull rod, and the latching plate includes a latching portion and an operating portion, and the latching portion can be latched with the latching tooth under the support of the spring, and the operating portion is used to apply an external force to enable the latching portion to overcome the action of the spring and disengage from the latching tooth, thereby releasing the lock.

10. The surgical instrument for treating digestive tract fistula according to claim 7, characterized in that: The track and the connecting part are provided with a support channel for the suture wire to pass through, and a suture wire push rod is provided at the end of the track. The suture wire push rod is used to drive the suture wire to move forward and backward in the support channel by pushing and pulling.

11. The surgical instrument for treating digestive tract fistula according to claim 10, characterized in that: The rotating frame control handle is nested in the suture wire push rod.

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